<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>02-就近原则</title>
</head>
<body>
    <script>
        // 对象执行方法时。先查看自己是否有这个方法，没有则查看隐式原型
        // 就近原则
        function Star(name,age) {
            this.name = name;
            this.age = age;
            this.sing = function () {
                console.log('构造函数  唱歌');
            }
        }
        Star.prototype.sing = function () {
            console.log('显示原型  唱歌');
        }

        let eason = new Star('eason,22');
        eason.sing();
    </script>
</body>
</html>